421119 Removing and installing lower trailing arm

WM 421119 Removing and installing lower trailing arm

Preliminary work

Preliminary work for removing and installing lower trailing arm

1. Remove wheel. -> 440519 Removing and installing wheel - section on "Removing" Removal and Replacement

Removing trailing arm

1. Loosen the threaded joint -1- for the trailing arm -2- on the wheel bearing housing -3- and pull out the screw.





Fastening screw on wheel bearing housing

2. Mark the installation position of the eccentric screw -1- in the rear axle housing -2- ( -A- ).





Marking position of eccentric screw

3. Loosen the eccentric screw -1- for the trailing arm -2- and pull it out of the rear axle housing -3-.





Eccentric screw for trailing arm

4. Loosen the fastening screw -1- for the trailing arm -2- in the front rear axle housing -3- and pull it out.





Front fastening screw

5. Take the trailing arm out of the vehicle.
Press it out of the guides using a suitable tool if necessary.

Installing trailing arm

Information

- All screws and bolts on the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on its wheels, or the wheel suspension is raised with a universal vehicle lift. Dimension -X- , from lower edge of wing to centre of axle corresponds to vehicle position. For the current height values, please refer to the adjustment values for suspension alignment -> 4495TW Adjustment values for suspension alignment 4495TW Adjustment values for suspension alignment.





Dimension X - lower edge of wing to centre of axle (shown as an example)

- Visually inspect all parts.

- Replace self-locking nuts.

- Replace all expansion screws (screws fitted using torque angle tightening procedure).

- Use correct tightening torques and torque angle. -> 4X00IN Tightening torques for rear axle 4X00IN Tightening torques for rear axle

1. Insert the lower trailing arm into the mounting.
2. Insert and fit the front fastening screw -1- into the rear axle housing -3- and trailing arm -2-.





Front fastening screw

3. Insert the eccentric screw -1- for the trailing arm -2- into the rear axle housing -3-.





Eccentric screw for trailing arm

4. When inserting the eccentric screw -1- , make sure that the markings -A- on the rear axle housing -2- and eccentric screw are aligned.





Marking on eccentric screw

5. Fit eccentric screw.
6. Insert and fit the fastening screw -1- used to secure the trailing arm -2- to the wheel bearing housing -3-.





Fastening screw on wheel bearing housing

Subsequent work

Subsequent work for removing and installing trailing arm

1. Fit wheel. -> 440519 Removing and installing wheel - section on "Installing" Removal and Replacement
2. Perform suspension alignment. -> 449503 Suspension alignment, complete 449503 Suspension alignment, complete